fix(frontends/lean/dependencies): warning message
fix(frontends/lean/dependencies): warning message

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

fgdorais/lean,c-cube/lean,UlrikBuchholtz/lean,digama0/lean,htzh/lean,leodemoura/lean,rlewis1988/lean,dselsam/lean,johoelzl/lean,fpvandoorn/lean,Kha/lean,rlewis1988/lean,soonhokong/lean,soonhokong/lean-osx,johoelzl/lean,johoelzl/lean,Kha/lean,avigad/lean,eigengrau/lean,eigengrau/lean,rlewis1988/lean,eigengrau/lean,sp3ctum/lean,avigad/lean,Kha/lean,leodemoura/lean,c-cube/lean,levnach/lean,soonhokong/lean,leanprover-community/lean,leanprover/lean,c-cube/lean,javra/lean,javra/lean,fpvandoorn/lean2,fgdorais/lean,leanprover/lean,leanprover-community/lean,levnach/lean,soonhokong/lean,Kha/lean,UlrikBuchholtz/lean,fpvandoorn/lean,soonhokong/lean-osx,fgdorais/lean,fpvandoorn/lean2,leanprover-community/lean,fpvandoorn/lean2,leodemoura/lean,johoelzl/lean,htzh/lean,htzh/lean,dselsam/lean,fgdorais/lean,leodemoura/lean,eigengrau/lean,avigad/lean,fpvandoorn/lean2,leanprover-community/lean,UlrikBuchholtz/lean,johoelzl/lean,sp3ctum/lean,javra/lean,htzh/lean,javra/lean,htzh/lean,soonhokong/lean-windows,leanprover/lean,c-cube/lean,Kha/lean,fpvandoorn/lean2,leanprover/lean,leanprover-community/lean,sp3ctum/lean,soonhokong/lean-osx,soonhokong/lean-osx,UlrikBuchholtz/lean,sp3ctum/lean,soonhokong/lean-osx,digama0/lean,dselsam/lean,soonhokong/lean-windows,digama0/lean,c-cube/lean,avigad/lean,fpvandoorn/lean,fgdorais/lean,leanprover-community/lean,avigad/lean,soonhokong/lean-windows,fpvandoorn/lean,fpvandoorn/lean,soonhokong/lean,rlewis1988/lean,eigengrau/lean,soonhokong/lean,leanprover/lean,fpvandoorn/lean,leanprover/lean,levnach/lean,Kha/lean,rlewis1988/lean,javra/lean,UlrikBuchholtz/lean,leodemoura/lean,digama0/lean,sp3ctum/lean,fgdorais/lean,dselsam/lean,levnach/lean,digama0/lean,digama0/lean,soonhokong/lean-windows,leodemoura/lean,johoelzl/lean,rlewis1988/lean,levnach/lean,dselsam/lean,soonhokong/lean-windows,avigad/lean,dselsam/lean